Operating Mechanism Maintenance Maintenance
1HSB515409-100 en rev2 9
4. Maintenance
4.1 General
The Operating and Maintenance Instructions for the circuit-breaker should be
studied and followed before work on circuit-breaker is started and while work is in
progress.
WARNING
Do not operate the operating mechanism unloaded!
Operations shall take place only after the mechanism has been connected
and trimmed with the associated pressurised circuit-breaker.
The component parts of the operating mechanism are integrated in a cabinet, which
also contains a control panel with operating equipment. The top and doors of the
cabinet can be removed to facilitate service and overhaul procedures.
Figure 4-1. Operating mechanism
• Measure all operating values and note them down. If the measured values
correspond with the specified values for the circuit-breaker, then only a visual
inspection, cleaning and lubrication are required.
Item
1 Drive unit
2 Operating
mechanism
3 Control panel
4 Spring battery
5 Heater element
1
2
4
3
5
B20001
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